sub a {
    print shift;
    my $answer = <STDIN>;
    chomp $answer;
    return 1 if $answer =~ /y/i;
    return 0;
}

sub t {
    print "What is your animal?\n";
    my $answer = <STDIN>;
    chomp $answer;
    return $answer;
}

sub i {
    my ($g, $u) = @_;
    print "What is a question that is true for $u, but false for $g?\n";
    my $answer = <STDIN>;
    return $answer;
}

sub w {
    print "Do you want to continue?\n";
    my $answer = <STDIN>;
    chomp $answer;
    return 1 if $answer =~ /y/i;
    return 0;
}

sub g {
    my $animal = shift;
    print "Is your animal a";
    print "n" if $animal =~ /^[aeiou]/;
    print " $animal?\n";
    my $answer = <STDIN>;
    chomp $answer;
    return 1 if $answer =~ /y/i;
    return 0;
}